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    • 4. 发明申请
    • ROTOR FOR MAGNET-EMBEDDED MOTOR AND MAGNET-EMBEDDED MOTOR
    • 磁铁嵌入式电机和磁悬浮电机的转子
    • US20100171386A1
    • 2010-07-08
    • US12602056
    • 2008-05-27
    • Tomonari KogureMasaaki Hiraga
    • Tomonari KogureMasaaki Hiraga
    • H02K1/27
    • H02K1/2766H02K1/276
    • The present invention provides a rotor a for magnet-embedded motor and a magnet-embedded motor whereby the manufacturing cost thereof can be significantly reduced while securing desired coercive force and magnetic flux density. A rotor for a magnet-embedded motor which comprises a plurality of permanent magnets 21 embedded therein, wherein each permanent magnet 21 is formed with a plurality of magnetic regions A to D having different coercive forces that are determined based on the intensity of the inverse magnetic field that acts on each permanent magnet 21, provided that a magnetic region having a relatively large coercive force is designated to be a region that is influenced by a relatively large inverse magnetic field.
    • 本发明提供一种用于磁体嵌入式电动机和磁体嵌入式电动机的转子a,由此可以在确保所需矫顽力和磁通密度的同时大大降低其制造成本。 一种用于嵌入磁体的电机的转子,其包括嵌入其中的多个永磁体21,其中每个永磁体21形成有多个磁场A至D,其具有不同的矫顽力,该矫顽力是根据逆磁场强度确定的 只要具有相对较大的矫顽力的磁性区域被指定为受相对较大的反向磁场影响的区域,其作用在每个永磁体21上。
    • 5. 发明授权
    • Rotor and IPM motor
    • 转子和IPM电机
    • US08729763B2
    • 2014-05-20
    • US13809910
    • 2010-07-23
    • Tomonari KogureHiroko Kurihara
    • Tomonari KogureHiroko Kurihara
    • H02K21/12
    • H02K1/274H02K1/2766H02K2213/03
    • Disclosed are a rotor and an IPM motor capable of avoiding concentration of flux on a corner area of a magnet on the stator side, leading to reduction in demagnetizing field and accordingly reduction in a required coercive force, and reduction in the usage amount of dysprosium or the like and accordingly reduction in manufacturing cost. In a slot bored in a rotor core of a rotor making up a motor, at least one of a slot face on a center side of the rotor core and a slot face facing this slot face is formed a protrusion or a concave groove and the magnet to be inserted in the slot includes at least one of a concave groove and a protrusion to be engaged with the protrusion or the concave groove of the slot face at a position corresponding to the protrusion or the concave groove formed in the slot. Then, these concave groove and protrusion are engaged to form an engagement part. This engagement part aligns and fixes the magnet in the rotor, and a flux barrier is formed between a lateral side face of the magnet and a slot face, the flux barrier having a same thickness as a thickness of the magnet.
    • 公开了一种转子和IPM电动机,其能够避免在定子侧的磁体的角落区域上的磁通集中,导致退磁场的减少,从而减少所需的矫顽力,并减少镝的使用量或 相应地降低制造成本。 在构成电动机的转子的转子芯中钻孔的槽中,转子铁心的中心侧的槽面和面向该槽面的槽面中的至少一个形成有突起或凹槽,并且磁铁 插入槽中包括凹槽和突起中的至少一个,以与形成在槽中的突起或凹槽对应的位置与槽面的突起或凹槽接合。 然后,这些凹槽和突起接合以形成接合部。 该接合部将磁体对准和固定在转子中,并且在磁体的侧面和槽面之间形成磁通屏障,磁通屏障具有与磁体厚度相同的厚度。
    • 6. 发明申请
    • ROTOR AND IPM MOTOR
    • 转子和IPM电机
    • US20130113328A1
    • 2013-05-09
    • US13809910
    • 2010-07-23
    • Tomonari KogureHiroko Kurihara
    • Tomonari KogureHiroko Kurihara
    • H02K1/27
    • H02K1/274H02K1/2766H02K2213/03
    • Disclosed are a rotor and an IPM motor capable of avoiding concentration of flux on a corner area of a magnet on the stator side, leading to reduction in demagnetizing field and accordingly reduction in a required coercive force, and reduction in the usage amount of dysprosium or the like and accordingly reduction in manufacturing cost. In a slot bored in a rotor core of a rotor making up a motor, at at least one of a slot face on a center side of the rotor core and a slot face facing this slot face is formed a protrusion or a concave groove, and the magnet to be inserted in the slot includes at least one of a concave groove and a protrusion to be engaged with the protrusion or the concave groove of the slot face at a position corresponding to the protrusion or the concave groove formed in the slot. Then, these concave groove and protrusion are engaged to form an engagement part. This engagement part aligns and fixes the magnet in the rotor, and a flux barrier is formed between a lateral side face of the magnet and a slot face, the flux harrier having a same thickness as a thickness of the magnet.
    • 公开了一种转子和IPM电动机,其能够避免在定子侧的磁体的角落区域上的磁通集中,导致退磁场的减少,从而减少所需的矫顽力,并减少镝的使用量或 相应地降低制造成本。 在构成电动机的转子的转子芯中钻孔的槽中,在转子铁心的中心侧的槽面和面向该槽面的槽面中的至少一个上形成有突起或凹槽, 要插入槽中的磁体包括与形成在槽中的突起或凹槽相对应的位置处与槽面的突起或凹槽接合的凹槽和突起中的至少一个。 然后,这些凹槽和突起接合以形成接合部。 该接合部将磁体对准和固定在转子中,并且在磁体的侧面和槽面之间形成磁通屏障,磁通束具有与磁体厚度相同的厚度。
    • 8. 发明授权
    • Method for determining coercivity of coercivity distribution magnet
    • 确定矫顽力分布磁体矫顽力的方法
    • US08493062B2
    • 2013-07-23
    • US13583681
    • 2010-03-15
    • Tomonari KogureMayumi Nakanishi
    • Tomonari KogureMayumi Nakanishi
    • G01N27/76
    • G01R33/10G01R31/34G01R33/1215G01R33/1223
    • According to the present invention, a method for determining coercivity of a coercivity distribution magnet, whereby coercivity of each portion in the coercivity distribution magnet can be determined with good accuracy without, for example, cutting the coercivity distribution magnet into pieces and thus quality assurance can be achieved with good accuracy, is provided.The coercivity determination method of the present invention comprises the following steps: a step of dividing a plane of a coercivity distribution magnet into a plurality of virtual plane segmented regions, placing the coercivity distribution magnet in a demagnetization-field-applying device, providing detectors for the plane segmented regions, and creating a demagnetization loss curve for each plane segmented region; a step of determining the minimum coercivity and the mean coercivity; a step of creating a coercivity distribution graph based on three hypotheses; and a step of determining the coercivity at an arbitrary position on the plane of the coercivity distribution magnet with the use of the coercivity distribution graph based on which the coercivity for each plane segmented region is determined.
    • 根据本发明,一种用于确定矫顽磁力分布磁体的矫顽力的方法,由此能够以高精度确定矫顽磁力分布磁铁中各部分的矫顽力,而不需要例如将矫顽力分布磁铁切割成片,从而可以确保质量保证 提供良好的准确性。 本发明的矫顽力测定方法包括以下步骤:将矫顽力分布磁体的平面分割为多个虚拟平面分割区域,将矫顽力分布磁铁置于退磁场施加装置中,提供检测器 平面分割区域,并为每个平面分割区域产生去磁损耗曲线; 确定最小矫顽力和平均矫顽力的步骤; 基于三个假设创建矫顽力分布图的步骤; 以及使用确定每个平面分割区域的矫顽力的矫顽力分布图来确定矫顽力分布磁体的平面上的任意位置的矫顽力的步骤。